Association between the daily duration of MP calls and well-being in children (n=746)
| Symptom | Categories of MP usage | n (%) | p^ | OR (95% CI) | Adjusted OR (95% CI)† |
|---|---|---|---|---|---|
| Headache | Duration of calls | 0.079 | |||
| 1 year | |||||
| 0–10 min/day (ref) | 13 (6.6) | 1.00 | 1.00 | ||
| >10 min/day | 7 (13.0) | 2.12 (0.80 to 5.61) | 1.71 (0.60 to 4.92) | ||
| >1 year | |||||
| 0–10 min/day | 18 (9.7) | 1.53 (0.73 to 3.23) | 1.28 (0.60 to 2.75) | ||
| >10 min/day | 12 (16.7) | 2.85 (1.23 to 6.57)* | 2.35 (0.97 to 5.70) | ||
| Dizziness | Duration of calls | 0.471 | |||
| 1 year | |||||
| 0–10 min/day (ref) | 21 (10.6) | 1.00 | 1.00 | ||
| >10 min/day | 10 (18.5) | 1.92 (0.84 to 4.36) | 1.48 (0.61 to 3.62) | ||
| >1 year | |||||
| 0–10 min/day | 23 (12.4) | 1.26 (0.67 to 2.34) | 1.22 (0.59 to 2.17) | ||
| >10 min/day | 10 (13.9) | 1.36 (0.61 to 3.05) | 1.28 (0.56 to 2.97) | ||
| Fatigue | Duration of calls | 0.025 | |||
| 1 year | |||||
| 0–10 min/day (ref) | 23 (11.6) | 1.00 | 1.00 | ||
| >10 min/day | 5 (9.3) | 0.78 (0.28 to 2.15) | 0.80 (0.28 to 2.27) | ||
| >1 year | |||||
| 0–10 min/day | 32 (17.2) | 1.59 (0.89 to 2.84) | 1.63 (0.89 to 2.99) | ||
| >10 min/day | 18 (25.0) | 2.54 (1.27 to 5.05)* | 2.98 (1.46 to 6.12)* | ||
| Sleeping problems | Duration of calls | 0.204 | |||
| 1 year | |||||
| 0–10 min/day (ref) | 32 (16.2) | 1.00 | 1.00 | ||
| >10 min/day | 14 (25.9) | 1.82 (0.89 to 3.72) | 1.51 (0.69 to 3.28) | ||
| >1 year | |||||
| 0–10 min/day | 33 (17.7) | 1.13 (0.66 to 1.92) | 1.12 (0.63 to 1.98) | ||
| >10 min/day | 18 (25.0) | 1.73 (0.90 to 3.33) | 1.82 (0.89 to 3.70) | ||
| Feeling low | Duration of calls | 0.576 | |||
| 1 year | |||||
| 0–10 min/day (ref) | 20 (10.1) | 1.00 | 1.00 | ||
| >10 min/day | 9 (16.7) | 1.78 (0.76 to 4.17) | 1.56 (0.64 to 3.85) | ||
| >1 year | |||||
| 0–10 min/day | 20 (10.8) | 1.08 (0.56 to 2.08) | 1.14 (0.58 to 2.34) | ||
| >10 min/day | 9 (12.5) | 1.27 (0.55 to 2.94) | 1.44 (0.61 to 3.38) | ||
| Heart beating fast | Duration of calls | 0.375 | |||
| 1 year | |||||
| 0–10 min/day (ref) | 19 (9.6) | 1.00 | 1.00 | ||
| >10 min/day | 5 (9.3) | 0.96 (0.34 to 2.71) | 0.62 (0.19 to 1.99) | ||
| >1 year | |||||
| 0–10 min/day | 10 (5.4) | 0.54 (0.24 to 1.19) | 0.47 (0.21 to 1.06) | ||
| >10 min/day | 4 (5.6) | 0.55 (0.18 to 1.69) | 0.36 (0.10 to 1.29) |
p^ obtained through χ2 test.
*p<0.05.
†Adjusted for sex, age, rural/urban residence, academic stress, daily exercise and having a recent cold or flu.
MP, mobile phone.